@book{4698,
	author = {Laurell, Asa Cristina. and Ortega, María Elena.},
	title = {El impacto del tratado de Libre Comercio en el sector salud},
	publisher = {Fundación Friedrich Ebert,},
	year = {1991},
	series = {Economics. Working paper},
	address = {México, D. F. :},
	note = {54-78}
}